High Hardness Deep Hole Drill Bit 17.0–18.9mm carbide end milll
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BEYOND HRC65 8D Solid Carbide Drill with Internal Coolant (17.0–18.9mm)
The BEYOND HRC65 8D Solid Carbide Drill is engineered for high-efficiency and precision drilling in hardened materials up to HRC65. With an 8×D length-to-diameter ratio and internal coolant channels, it provides smooth chip evacuation, excellent heat resistance, and extended tool life, making it ideal for deep-hole drilling applications in molds, dies, and aerospace parts.
🔧 Product Features
- High Hardness Carbide: Premium ultra-fine tungsten carbide material ensures superior wear resistance and rigidity.
- Internal Coolant Holes: Dual-channel coolant design improves heat dissipation and chip evacuation during deep drilling.
- 8×D Deep-Hole Design: Stable performance even under heavy load conditions for long drilling depth.
- Optimized Cutting Edge: Sharp edges minimize cutting force and improve hole roundness and finish quality.
- High-Performance Coating: Nano-coating extends tool life, prevents adhesion, and enhances surface finish.
📐 Available Specifications (Diameter × Flute Length × Overall Length × Shank)
| Model | Flute Length (mm) | Overall Length (mm) | Shank Diameter (mm) |
|---|---|---|---|
| 17.0×171×223×18 | 171 | 223 | 18 |
| 17.1×171×223×18 | 171 | 223 | 18 |
| 17.2×171×223×18 | 171 | 223 | 18 |
| 17.3×171×223×18 | 171 | 223 | 18 |
| 17.4×171×223×18 | 171 | 223 | 18 |
| 17.5×171×223×18 | 171 | 223 | 18 |
| 17.6×171×223×18 | 171 | 223 | 18 |
| 17.7×171×223×18 | 171 | 223 | 18 |
| 17.8×171×223×18 | 171 | 223 | 18 |
| 17.9×171×223×18 | 171 | 223 | 18 |
| 18.0×171×223×18 | 171 | 223 | 18 |
| 18.1×190×244×20 | 190 | 244 | 20 |
| 18.2×190×244×20 | 190 | 244 | 20 |
| 18.3×190×244×20 | 190 | 244 | 20 |
| 18.4×190×244×20 | 190 | 244 | 20 |
| 18.5×190×244×20 | 190 | 244 | 20 |
| 18.6×190×244×20 | 190 | 244 | 20 |
| 18.7×190×244×20 | 190 | 244 | 20 |
| 18.8×190×244×20 | 190 | 244 | 20 |
| 18.9×190×244×20 | 190 | 244 | 20 |
💡 Applications
- Perfect for hardened steel, die steel, alloy steel, stainless steel, and titanium alloys.
- Recommended for deep-hole drilling in molds, dies, aerospace, and precision mechanical parts.
- Compatible with CNC machining centers, drilling machines, and vertical mills.
⚙️ Recommended Cutting Parameters
- Cutting speed: 40–60 m/min (depends on workpiece hardness)
- Feed rate: 0.05–0.15 mm/rev
- Coolant: Internal coolant recommended for optimal performance
📦 Packaging & Shipping
Each BEYOND carbide drill is securely packed in a protective case with laser-marked specifications. Global delivery available via DHL, FedEx, and UPS.
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.